$re = '/Writer : (?P<Writer>[\s\S]+?)Director : (?P<Director>[\s\S]+?)Producer : (?P<Producer>[\s\S]+)/';
$str = 'Writer : Jeffrey Schenck / Peter Sullivan / Director : Brian Trenchard-Smith / jack / Producer : smith';
preg_match_all($re, $str, $matches, PREG_SET_ORDER, 0);
// Print the entire match result
var_dump($matches);
Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report. For a full regex reference for PHP, please visit: http://php.net/manual/en/ref.pcre.php